They are spraying aluminum and boron, among other hyper reflective materials. They are claiming that they are using these reflective materials to combat global warming, but conveniently enough aluminum and boron lower your immune system when it enters your body by either breathing the particles, eating, or drinking. This is not a conspiracy theory. This is what they are doing. Look it up, even Bill Gates has a video explaining why they are spraying reflective fibers from jets. They have big conferences about this all the time. It's not hidden. It's public information. If you believe it's water lingering around in the sky all day you are misinformed and have most likely done no research on the subject at all.